Pyrographical instrument.



No. 769,936. PATENTED SEPT. 18, 1904. J. F. BURNS.

PYROGRAPHIGAL INSTRUMENT.

APPLIGATION FILED IEB. 2a, 1904.

N0 MODEL.

w/rmzsszs mama/2 B y S 7 M A TTORNEV Patented September 13, 1904.

arnNT OFFICE.

JOSEPH F. BURNS, OF BROOKLYN, NEW YORK.

PYROGRAPHICAL INSTRUMENT.

SPECIFICATION forming part of Letters Patent No. 769,936, datedSeptember 13, 1904.

Application filed February 26, 1904. Serial No. 195,329. (No model.)

To LI/ZZ whom it pea/y concern:

Be it known that I, JOSEPH F. BURNS, a resident of Brooklyn, in thecounty of Kings, in the State of New York, have invented certain new anduseful Improvements in Pyrographical Instruments, of which the followingis a specification.

- My invention relates to what are known as i the burning needles orpoints of pyrographical instruments employed in charring wood, leather,or the like, and has for its object to provide a durable, cheap, andeflicient device of this character having a burning or charring point ofnovel construction whereby the operator will be enabled to manipulatethe same with precision and effectiveness.

To these and other ends, which will hereinafter appear, my inventionconsists in the novel features of improvement hereinafter set forth andfinally summarized in the appended claims.

Reference is had to the accompanying drawings, forming part hereof,wherein- Figure 1 is aside elevation of a metallic tube from which myimproved device is con structed. Fig. 2 is a similar view of aburning-needle constructed in accordance with my invention. Fig. 3 is aplan view thereof, and Fig. 4c is a longitudinal central section of thelower portion thereof.

Similar numerals of reference indicate corresponding parts in theseveral views.

In constructing my improved burningneedle I take a metallic tube 1 ofsuitable size and thickness and taper the same near one end thereof, asat 2, and at this tapered end I provide a flattened portion 4,projecting from the point 3 of the tapered portion at an angle thereto,as shown in Figs. 1 and 4. The entire operation of producing the taperedand flattened portion described is preferably accomplished by swaging orcompressing one end of the tube by suitable swaging devices to producethe desired taper and thickness and bend.

1 indicates suitable gas jets or orifices near the operating end of theneedle, whereby the same is heated in well-known manner.

The extreme edge of the flattened portion 4 is preferably somewhat widerthan the diameter of the tube and is by preference provided with aknife-like operating edge 5, providing also sharp operating corners orpoints 5* 5 and the said edge 5 is preferably slightly slanted, (seeFig. 3,) whereby the corner or point 5 will be somewhat sharper or morepointed than the corner or point 5 for producing diflerent effects onthe articles operated upon.

The fiat operating-surface4 of my improved needle enables the operatorto char or burn large sections of wood or the like with great rapidity,and in connection with the points 5 5 he will be enabled to producevaried charring effects with this single burning-needle, and thusdispense with the use of independent needles or points for producingfine and broad lines.

It will of course be understood that instead of providing the entiretube and point, as shown and described, I may embody my invention inpoint-sections to be applied to pyrographic tools or instruments ofwell-known construction.

' Having now described my invention, what I claim, and desire to secureby Letters Patent, is

1. A burning-needle for pyrographical purposes, comprising a metallictubular body portion provided with a bent flattened end having operatingcorners or points and an operating edge.

2. A burning-needle, comprising a metallic tube having a bent taperedflattened end provided with a sharp operating edge, and withgas-orifices near said end.

3. A burning-needle, comprising a metallic tubular body provided withgas-orifices and with an end portion bent at an angle to said body, saidend portion presenting a comparatively broad flat burning-surface withtwo operating points or corners.

4:. Aburning-needle comprising a metallic tube swaged and bent at oneend at an angle to the body thereof to form a comparatively broad andflat operating-point.

5. A burning-needle comprising a metallic tube swaged and bent at oneend to form a broad and fiat angular operating-point, the tube beingprovided with gas-orifices near the operating-point.

6. A burning-needle of the character de- 5 scribed, comprising ametallic tube swaged and bent at one end at an angle to the body thereofto form a flat operating-point, the tube being provided with suitablegas-orifices, and the said operating-point being provided with I0 aknife-like edge presenting two operating points or corners.

7 A device of the character described having a fiat burning-surface atone end at an angle to the body of the device, gas-orifices near saidend, said flat burning-surface being provided with two operating-points.

8. Adevice of the character described, comprising a metallic tubeprovided with gas-orifices near one end, a tapered portion near saidend, and a comparatively broad flat burningpoint projecting at an anglefrom said tapered portion, the outer edge of said burning-point havingtwo operating-corners, substantially as and for the purpose described.

JOSEPH F. BURNS.

Witnesses:

DAISY L. ROBINSON, ALEX WHITELY.

